Return-Path: Received: from mtain-dh03.r1000.mx.aol.com (mtain-dh03.r1000.mx.aol.com [172.29.65.23]) by air-mc03.mail.aol.com (v127_r1.1) with ESMTP id MAILINMC034-a8de4b86ec6f151; Thu, 25 Feb 2010 16:32:31 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dh03.r1000.mx.aol.com (Internet Inbound) with ESMTP id E8568380000B9; Thu, 25 Feb 2010 16:32:29 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NklIe-00080M-OV for rs_out_1@blacksheep.org; Thu, 25 Feb 2010 21:31:12 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NklIe-00080D-BO for rsgb_lf_group@blacksheep.org; Thu, 25 Feb 2010 21:31:12 +0000 Received: from mail-qy0-f178.google.com ([209.85.221.178]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NklIc-0000HL-Ka for rsgb_lf_group@blacksheep.org; Thu, 25 Feb 2010 21:31:12 +0000 Received: by qyk8 with SMTP id 8so1266888qyk.4 for ; Thu, 25 Feb 2010 13:31:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=3UicbI7KJy37icZPhJlmBvKAfkK9wZveWr3cNKqZtDY=; b=NwL+5uvezAplt8F4BKoc29NbqsaXLFNL35ShpOARF7Ge44v8m7Pk0vmUOcXXpEORFy ekftWgId/Msc1yYVRsrJEQ+dnvXBr7azeViiiY6rMh+2+7qPVxpT5LGRnDAvLkXP2uNq WEN/rSz0qMgllX3zHSCH43FX92PvXL8MOU0fg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=GPl2RToppqU1DX4dDklvTD9fenSJ1rboUjOAtwt3QNbpJppqXRR+52I92aAFl1eaZX dXI8l6m1ukSrC9rPOQ8iKd+kUmu7lYclgXbH9gYkVS/oi35VMVzx+cAFDy4W3T+qxMSV K8aT0SggvkqmVOfRz1aHtLb0xQnyk/Zw9gees= MIME-Version: 1.0 Received: by 10.224.115.81 with SMTP id h17mr6833qaq.231.1267133462250; Thu, 25 Feb 2010 13:31:02 -0800 (PST) In-Reply-To: References: <9afca2641002221442s72f18373t26847ca0487ac2b1@mail.gmail.com> <9afca2641002230232k3af949e6kcd2fe2a53b11d822@mail.gmail.com> <9afca2641002250919y7bdb25ebq8b913bb7d210e488@mail.gmail.com> Date: Thu, 25 Feb 2010 16:31:02 -0500 Message-ID: <57a24ca71002251331m10d45acfo2284f6cfe89f5607@mail.gmail.com> From: Warren Ziegler To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Fwd: Special Permits for Amateur Radio Operation below 9kHz? Content-Type: text/plain; charset=ISO-8859-1 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m245.2 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d41174b86ec6d649e X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Asking Ofcom for a license or Nov to generate a signal that will not extend past your own garden seems like a lot of trouble for nothing.... -- 73 Warren K2ORS WD2XGJ WD2XSH/23 WE2XEB/2 WE2XGR/1 On Thu, Feb 25, 2010 at 3:28 PM, Jacek Lipkowski wrote: > On Thu, 25 Feb 2010, Roger Lapthorn wrote: > >> People may be interested in the reply from Rod Wilkinson at OFCOM received >> today. I asked him what OFCOM's view would be. > > [...] >> >> They state that ITU Radio Regs indicate that there is no allocation for >> frequencies below 9 kHz. However in the UK, a licence would be required as >> there is no lower frequency limit for wireless telegraphy under the WT Act >> 2006. [...] > > there is already a very big commercial user of the elf and vlf spectrum, > they inject very big power into ground dipoles. emissions from one continent > can be heard on another. and they do this without any license from the radio > authorities. the only regulation they need regards maximum field strengths > (and this is usually the realm of some environmental protection authority > and not the radio authority). the operating frequency varies, but is usually > 50Hz, 60Hz, 16.6Hz etc :) > > sometimes when dealing with the goverment, the best practice is not to ask > at all :) even if they agree with you there will always be a "but you will > need a license for that" clause. > > if you have to ask, ask them if it is their duty to regulate potential > electromagnetic wave transmission from instalations operating on 50Hz (or > any other frequency in the 0-9kHz region, that is not ITU regulated). you > would probably get an entirely different answer :) > > VY 73 > > Jacek / SQ5BPF > > ps. the answer that you got from OFCOM is actually very nice